MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Formaldehyde cannot undergo aldol condensation as well as Cannizzaro’s reaction. |
| A. | Trues |
| B. | False |
| Answer» C. | |
| 2. |
When an aldehyde is heated with Fehling’s solution, a reddish-brown precipitate is formed due to which compound? |
| A. | CuS |
| B. | AgBr |
| C. | Cu2O |
| D. | CdS |
| Answer» D. CdS | |
| 3. |
What is the proportion of Fehling solution A to Fehling solution B in the solution of Fehling’s reagent for conducting Fehling’s test? |
| A. | 1:1 |
| B. | 1:2 |
| C. | 2:1 |
| D. | 1:3 |
| Answer» B. 1:2 | |
| 4. |
Which of the following is Tollen’s reagent? |
| A. | Ammoniacal silver nitrate solution |
| B. | Aqueous copper sulphate |
| C. | Alkaline sodium potassium tartarate |
| D. | Mixture of sodium carbonate, sodium citrate and Cu2+ complex |
| Answer» B. Aqueous copper sulphate | |
| 5. |
Four compounds A, B, C and D were heated individually with Tollen’s reagent. It was found that all compounds other than D formed a silver mirror on the inside of their test tubes. Identify the compound D. |
| A. | Acetaldehyde |
| B. | Butyraldehyde |
| C. | Acetone |
| D. | Benzaldehyde |
| Answer» D. Benzaldehyde | |